1. In California, state law says that a train may block a crossing for no more than ten minutes. If it is not possible to move the entire train and law officers are on the scene, they must be consulted as to which crossing should be "cut" (that is when you leave one piece of your train on one side of the crossing and pull or shove the rest of the train to clear on the opposite side) so that the most traffic can be handled. It is their call.
2. The railroad has been around for a long time where I live. Several small towns are bisected by the tracks. In each, fire department trucks are maintained in separate fire houses on both sides of the rails, including the EMTs. A little foresight will go a long way. Perhaps you should contact any city council members that may be involved, thence to the county board of supervisors. If there is still no action -- next stop, your state firefighting agency. In Ca that is the CDF. And on you go to the federal level... as far as needed. Now that you know what to do, do it. The squeaky wheel gets the grease.
3. 200 car trains are ridiculous at any time. (The most I ever handled were 130 car reefer drags over the Sierras). If you want to get involved here, follow the same chain, only forget the municipal and and county levels and substitute (offending railroad's name here) as a starting point [do not expect anything to change at the corporate level, however]. At the Federal level we can't buy legislation, but (offending railroad's name here) sure as hell can. [Here is a tip. The trains that continually block the crossings have troubles moving, right? Wanna know why? 200 cars pretty much says it all, no?] So here, you probably should just forget everything written after the first sentence of this paragraph.
4. Follow through on the emergency vehicle hazard. It'll be the only thing you have a shot at achieving.
Addendum: Horsepower per ton? What is that? I have heard of it of course, but I was under the impression that was a function of weight, not length. I mean, 200 empties may tip the scales somewhere between ten or eleven thousand tons on the very high end, which on level ground is easy work for a three unit road engine with no need of additional horsepower. So now I'm confused. Please explain. Then we can address the air problems associated with 200 car trains (in actuality, during winter months air can get problematic for trains as little 5600 feet and up in length, which isn't any where the length of 200 cars or even those 130 car reefer drags), air problems which are in fact a function of length as well as leakage, ambient temperature and altitude, if I understand how the air works,,,
But that would have to be another question asked, malwill, and while I always endeavor to be accurate, I sure as shootin' ain't always right.
And I have two ex-wives to PROVE that...